Wu Guohua: Nonhemimaximal sets and degrees

Invitation to the Logic Seminar at the National University of Singapore

Date: Wednesday, 15 October 2014, 17:00 hrs

Room: S17#04-04, Department of Mathematics, NUS

Speaker: Wu Guohua

Title: Nonhemimaximal sets and degrees

Abstract: In this talk, I will present a recent work with Mustafa and
Yamaleev on the Turing degrees of nonhemimaximal sets, proving that
the nonhemimaximal degrees are nowhere dense in the low2 c.e.
degrees. This answers a question of Downey and Stob.